It could have been worse for Ajax as Mats Hummels’ missed a second half penalty which was saved by Kenneth Vermeer which kept Ajax in the game.
However, Lewandowski struck three minutes from time in front of a crowd of more than 65,000 at the Westfalenstadion.
Dortmund had most of the first half chances, although none of them were clear-cut.
The game’s first opening came in the 10th minute – but Lewandowski’s shot was wide of the target.
Two minutes later at the other end Christian Eriksen had a shot which Dortmund goalkeeper Roman Weidenfeller parried for a corner.
Frank de Boer was only critical of his team not being more deadly in front of goal, Ajax did have chances and will need to improve on situations like this to get points from the Group of Death.
The home side’s Mario Gotze saw his close-range effort blocked by Ajax goalkeeper Kenneth Vermeer soon after.
Lewandowski tried an ambitious 25-yard lob just before the half hour mark – but it went over the crossbar – then Marcel Schmelzer brought a save out of Vermeer.
The final chance of the first half came in the 42nd minute – but Sebastian Kehl’s 30-yard effort sailed over.
Ajax almost level early in the second half but Weidenfeller did brilliantly to parry Siem de Jong’s powerfully struck shot.
Lewandowski shot over before Marco Reus brought a brilliant save out of Vermeer in the 52nd minute.
Then IIkay Gundogan shot over in the 52nd minute as the home side increased the pressure.
Five minutes later the hosts had a penalty when Ajax’s Ricardo Van Rhijn was penalised for fouling Gotze in the penalty area.
However Matt Hummels’ penalty was weakly struck and easily saved by Vermeer.
Ivan Perisic was brought on for Jakub Blaszczykowski for the home side, before Ajax’s Ryan Babel was replaced by Lasse Schone with 11 minutes remaining.
Babel second game for Ajax was impressive in playing the lone striker role.
He managed to make it hard for Dortmund, holding the ball up and bring other team mates into the game, he worked the ball well and didn’t lose it very often.
Ajax did play their own game, which we expected and can be pleased with most of the performance but will feel they have lost out on gaining a point away from home.
They will need to take their chances in front of goal to have any chance of finishing in the top three and carry on their adventure of European Football.
One thing that will keep the Ajax team going is their passionate supporters who never give in with the non stop singing to help motivate and help the players perform to win games.
Next up in the Champions League an easy game at home to Real Madrid?